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Abstract <p>This work reports a straightforward strategy to construct a self-healing material integrating complementary dynamic interactions, both covalent Diels–Alder and supramolecular multivalent amide-hydrogen bonds via the aminolysis reaction of DL-N-acetylhomocysteine thiolactone, a derivative of a sulfur amino acid, in combination with the thiol-maleimide and maleimide-furan Diels–Alder “click” reactions. Via this strategy, a prepolymer bearing multiple amide groups and maleimide endcaps was cross-linked with a tri-furan cross-linker. The obtained material was able to heal scratches and complete cuts with tensile strength recovery of 84 ± 7%.</p> Graphical abstract <p></p>

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Self-healing polymer via combined Diels–Alder and multivalent amide-hydrogen bonds

  • 期刊论文

  • 发表日期：

    2025年1月31日

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  • Thuy Thu Truong,
  • Ly Mai Thi Nguyen,
  • Hau Cong Le,
  • Minh Duy Hoang,
  • Ha Tran Nguyen,
  • Le-Thu T. Nguyen

摘要

Abstract

This work reports a straightforward strategy to construct a self-healing material integrating complementary dynamic interactions, both covalent Diels–Alder and supramolecular multivalent amide-hydrogen bonds via the aminolysis reaction of DL-N-acetylhomocysteine thiolactone, a derivative of a sulfur amino acid, in combination with the thiol-maleimide and maleimide-furan Diels–Alder “click” reactions. Via this strategy, a prepolymer bearing multiple amide groups and maleimide endcaps was cross-linked with a tri-furan cross-linker. The obtained material was able to heal scratches and complete cuts with tensile strength recovery of 84 ± 7%.

Graphical abstract